From Biology-Online Dictionary | Biology-Online Dictionary


(Science: enzyme) A subclass of enzymes that catalyse the transfer of an amino group from a donor (generally an amino acid) to an acceptor (generally 2 keto acid) in a cyclic process using pyridoxal phosphate as cofactor, for example aspartate amino transferase catalyses the reaction: aspartate _ ketoglutarate = oxaloacetate _ glutamate.